Ash-removing grate for ovens



March 31, 1931. M. LANDECK .17,798,474

ASH REMOVlNG GRATE FOR OVENS Filed April 6, 1929 LE f INVENTOR. f 'A Jia/zaal .Landeck A ATTORNEY Patented Mar. 31, 1931 PATENT OFFICE MICHAEL LANDECK, OF BROOKLYN,.NEW YORK.

.LSH-'REMOVING GRATE FOR OVIEXNS.A

Application mea. April s, 1929.` serial No. 353,026.

This invention relates to new and useful improvements in ash removing grates for ovens. l

The invention has for an object the pro- 5 visionof a device ofy the class mentioned which is of simple durable construction, dependable in use and efficient in action, and which can be manufactured and sold at a reasonable cost.

The invention proposes the use of an outer stationary frame with its front frame arni having its inner face formed with a fiat rearward inclined top portion and a bottom foi'- ward inclined portion, its rear frame arm having its inner face formed with a top flat rearward inclined portion and a bottom forward inclined portion, an intermediate grate frame to be pivotally supported by the outer frame and arranged for normally maintaining ahorizontal position, and the intermediate grate frame to support an inner grate frame slidably mounted and arranged to raise at its extremities of its sliding amplitude for shuffling a fire bed on the grate.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth. i

In tlie accompanying drawing forming a material part of this disclosure Fig. 1 is a plan view of a grate constructed accordingv to this invention.

Fig. 2 is a side elevational view looking in the direction of the arrows 2 2'of Fig. 1.

Fig. 3 is an enlarged fragmentary sectional view taken on the line 3 3 of Fig. 1. 1 i

Fig. 4 is a fragmentary enlarged sectional view taken on the line 4 4 of Fig. 1.

Fig. 5 is a fragmentary enlarged sectional View taken on the line 5 5 of Fig. 1.

Fig. 6 is a View Similar to Fig. 5 but illustrating a modification.

The reference numeral 10 indicates generally an outer stationary frame consisting of a front frame arm 11, a rear frame arm 12 and side arms 13. The front frame arm 11 i has its inner face formed with a flat rearof the inner frame are formed with a pluward inclined top portion 14. joining with a bottom j forward` inclined portion v1.5.. The rearI arm 12 has a top fiat rearward inclined portion 1'6 joining with a bottom rearward inclined portion 17. An intermediate grate 18 55 is provided `with trunnions 19V engaging in recesses 20' formed' in the side arms'13' of the frame and communicating with the top face.

K The intermediate grate 18 consists of a. front frame arm 21, a rear frame arm 22 and side arms 23. The front frame arm 21 has its outer face formed with a top rearward `inclined' portion 24` normally engaging against tlie portion 14 ofthe vouter frame for holding the intermediate frame against pivoting' in one direction.. The rear framearm 22 of theintermediate frame has its out-er face formed' with a rearward inclined top portion 24 norniallyengaged against the reai'-, ,.4 ward inelinedportion 16 of theouter frame 0 for holding the intermediate frame against rotation tlie same direction as before referred to'. f The lower portions ofthe outer faces of the'front' and rear frame arms arer inclined to permit rotation of the intermedi` 75 ate frame in a direction oppositeto the one before referred to.

The intermediate frame has a plurality of longitudinal grate bars 25 arranged so that i one of these bars coincides with the center of the fram-e. This central bar has a bottoni eX- tension 26 formed with an aperture 27 for 4eng'agement by oven poker for rotating the intermediate frame toy `drop a fire bed off they grate. A

An inner grate frame 28 has a plurality o'f grate bars' 29 arranged sothat a pair of these bars straddle the center one of the bars 25. The pair-of bars just referred to have bottom extensions v30v formed with apertures C 31 for receiving a poker so that the inner grate framev maybe reciprocated back and forth. Each of thelongitudinal grate bars 25 aif'e'formed with top recesses 32 at their front and' rear ends. Each of theseV recesses have a topvportion indicated by numeral 33 and formed with front and rear inclined endaan' intermedi ate portion 34 and a base portion 35. The yfront and rear frame arms rality of bottom recess portions 36 engaging the portions of the arms 25 directly beneath the recesses 32.

The front and rear faces 37 of the front and rear frame arms of the inner frame are inclined as clearly7 shoivn in Fig. 5 so that when the inner frame is reciprocated back and forth, these inclined sides engage against the inclined ends of the recess portions 33 for camming the inner frame upwards. Pins 38 project from the front and rear frame arms of the inner frame and extend into the base recess portions 35 and have bottom heads'39 preventing complete disengagement of the inner frame when cammed up in a raised position.

In the modified form of the device illustrated in Fig. 6, a plate 40 has been secured on the bottom of a longitudinal grate bar 25 and has upward projections 41 extending thru apertures in the grate bar so as to extend into the base port-ions 35 of the recess providing hills engageable by a roller 42 on the bottom of the pin 38. As the inner grate is reciprocated back and forth the roller 42 rides up and down on the hill portion 4l for shuffling a fire bed upon the grate.

In operation of the device a poker may be engaged in the apertures 31 and the inner grate frame reciprocated back and forth for shuffling a ire bed thereon. At the end of each stroke of the inner grate frame it is caused to rise due to the inclined sides 37 as above referred to. The pins 38 prevent complete engagement during rising. When it is desired to throw the bed of fire from the grate the poker may be engaged in the aperture 27 and the intermediate grate frame rotated about the trunnions 19.

lVliile I have shown and described the preferred embodiment of my invention7 it is to be understood that I do not limit myself to vthe precise construction herein disclosed and the right is reserved to all changes and modiications coming Within the scope of the invention as defined in the appended claims.

Having thus described my invention, What I claim as new, and desire to secure by United States Letters Patent is l. In an ash removing grate for ovens, a stationary frame, an intermediate frame having grate bars and pivotally mounted on said stationary frame, and an inner frame with grate bars slidably mounted on the intermediate frame, and limited in its amplitude of motion, and arranged to rise at the beginning and end of each stroke for shuiiiing Y a i'ire bed 'on the grate, said inner frame being Within said intermediate frame so that the latter frame accomplishes the said limiting of motion of the inner frame, and the intermediate frame being formed With inclined surfaces engageable by inclined surfaces on the inner frame to accomplish the said raising at the beginning and end of each stroke.

2. In an ash removing grate for ovens, a stationary frame, an intermediate frame having grate bars and pivotally mounted on said stationary frame, and an inner frame with grate bars slidably mounted on the intermediate frame, and limited in its amplitude of motion, and arranged to rise a number of times during each stroke, said raising being accomplished by a plate attached on said intermediate grate and formed, with projections forming hills, and a roller supported on the inner grate and engaging the hills, said inner frame being Within said intermediate frame so that the latter frame accomplishes the said limiting of motion of the inner frame.

In testimony whereof I have aiiXed my signature.

MICHAEL LANDECK.

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